Traction-wheel-cleaning device



June 3, 1930. 1 J. GUTH 1,761,262 TRAc idfi WHEEL CLEANING DEVICE Filed May 13, 1927 Patented June 3, 1930 UNITED STATES JACOB GUTH, OF ST. tours; miss'oum TBACTIQN-WHEEL-CLEANING nnvicn.

Application filed May 13,

This invention has reference to master or driving wheels for traction machinery, or '1 where engagement of the wheel with the ground is relied upon for the driving of moving parts by the progressive travel of the wheel. c

It is customary to provide tractors or traction engines with driving wheels having peripheral lugs designed to engage the ground to thus increase the tractive efi'ect, and it is likewise customary to mount wheels with peripheral lugs on machines which may be propelled over the groundby other means,jand power maybe taken from such wheels, then 15 termed master wheels. For various purposes,

it is found in practicethat a traction wheel provided with a ribbed periphery is liable to take up the soil, which, under some conditions, clings tenaciously to the wheel.

'20 The present inventioniis designed to provide a master or traction, wheel which will have full tractive engagement with the ground i over which it passes, and which to'a large extent is self-cleaning, and is keptparticu;

'25 larly clean by the employment of my new scraper, which in conjunction with the particular construction of the lugs employed on the active face of the Wheel, most effectively frees the wheel from clinging soil which he- 3 comes particularly troublesome in master wheels as ordinarily constructed. 7 V

In order to accomplish those results, the traction lugs of the master wheel are arranged'in two annular series staggeredly bolted to the rim'from the inner side of the wheel, and a V-shaped scraping device ar- 7 ranged to'have rotative movement near its forward end, and its rear gradually widening, which effectively cleans the wheel be- 9 tween the two seriesof lugs, and between each lug, which 'isaccomplished only by having the lugs staggeredlyspaced. c i

.1927. I s rial 1 1.215.

b'ottemyp'e mits the receptidn'of a traiitiion p inythe'wheel is reversed and-thereby tam itatesja reversal ofthe fblade.

I This inventionwill be best understoodifrom conside ation cf the following detailed a ts I'scription, taken in connection withtiieaicco'mpanyin'g drawings forming a part o'fthi'sr specification 'with the further understanding that while the drawings show a practicalemf "is a bottom plan Sill" blade: Fi'g. 5' is a rea view off "the fi i a assembly that}; ingig nigh is viewsimilarto Z5 and show? he several positions [assumed "the scraper g Referring to the drawims; there issjhiown a wheel 1, provided with a'xle 2., Theframe a torso-raping nvite emanate bem-ounted U dnill il and extends to the enter art 1615 v the wheel and then horizontally to a support n in ander i7. The "or supportr "3' is bent at a ri t angl a farm pat na a the me; 1 er the H V midw f -shaman ass gnmentr ee cespca en er the i i; a 5 s-t n aa f e inwfwl ammin -t e samba *3 isfittjed, the

providinga pivotn canteen: 'he't'wee" v, these m m er This invention does not only provide a I master or a traction wheel which Wlll have a scraping device to be used at the will of the operator, but alsopermits reversal of the trac- I c 45 full tractive engagement with the ground'and i.

tor without disengaging the scraping device.

The novel construction ofthe scraper blade which is a V-shape like, openat the rear and 3 is a Perspec ive V ew of the sea er The lower end to the depending leg of the edges of the blade oscillates in a sinuous path T-shaped frame 6 is bent to provide a pivotal between alternate traction elements and inmounting for a scraper blade 7 whereby the verts upon reversal of the wheel.

blade 7 is free to oscillate in a plane tangent to the surface of the wheel 1. The wheel 1 is provided in the conventional manner, with a plurality of traction elements or lugs 5, which are in staggered relation about the periphery of the wheel.

The V-shaped blade 7 whose vertex is always the leading edge of the blade, and is to follow the medial plane of the wheel 1, in the path between the alternate traction lugs 5, and the rear or wide portion of the blade 7, oscillates in a sinuous path between the two series of staggered lugs. In operation the soil is parted in the medial of the wheel by the scraper 7, and on account of the tapered lugs, it raises the soil above the lugs, and falls to each side of the wheel, as shown by the dotted lines in Fig. 5, whereby any accumulation of matter is readily removed therefrom, as the wheel rotates.

It often becomes necessary to reverse the direction of the tractors travel, and this may be accomplished with my scraper without necessitating the disengagement of the blade from the wheel. The novel structure of the blade 7 renders this possible. The blade 7 is V shaped, and in operation the vertex of the V is always the leading edge of the blade, and it will be observed from Fig. 6 that when thedirection of the wheel is reversed, one

of the traction lugs 5 engages within one wall of the V, and turns it as indicated at 10, the

lug entering between the walls of the V.

When the vertex of the blade 7 has passed the lug 5, the blade is gradually removed from the lug 5and further movement bringsit into the position indicated at 9, whereupon the vertex of the blade is the leading edge for this direction of travel.

WhatI claim is I 1. In a tractor, the combination with a wheel having traction elements disposed in staggered relation about the periphery thereof, of a scraper, comprising a supporting member and having a leg swingable in the medialplane of said wheel, a spring biasing the leg toward the wheel, and a scraper blade I pivoted to said leg for oscillation in a plane tangent to the wheel, whereby the trailing edges of the blade may follow a sinuous path between, alternate traction elements as the tractor progresses 2 The combination with a tractor wheel having a plurality of spaced annular series of traction elements, said traction elements of one series being staggered relative to the traction elements of another series, a scraper bladehaving its leading edge narrower than In testimony whereof, I afiix my signature.

JACOB GUTH. 

